EDI 860 (Purchase Order Change Request) is an X12 transaction set to send the information regarding the changes in a purchase order as per customary and established business and industry practice. It can be used by a buyer to request a change in the previous purchase order (EDI 850) or to confirm the changes in the purchase order requested by a seller.

EDI 856 (Shipment/Manifest) is an X12 transaction set to send a list of contents of an order with additional information relating to the shipment. It includes information such as item name, description, characteristics, packaging type, carrier information, and equipment and configurations for the item for transportation. It helps the sender to describe the item and arrange a suitable shipment.

EDI 855 (Purchase Order Acknowledgement) is an X12 transaction set used by sellers to send an acknowledgment to a buyer's purchase order as per customary and established business and industry practice. It can also be used to notify vendor-generated orders, which helps a buyer know if the seller has or will ship the order per pre-agreed terms.

EDI 850 (Purchase Order) is an X12 transaction set to place a purchase order for goods or services with a vendor as per customary and established business and industry practice.

EDI 846 (Inventory Inquiry/Advice) is an X12 transaction set to provide inventory information by a seller to a buyer, by a representative of a seller to that seller, and by one location to another location that is managing goods or services. It is also used to inquire about the availability of inventory without any obligations on the seller to reserve that inventory.

EDI 180 (Return Merchandise Authorization and Notification) is an X12 transaction set to return merchandise to the vendor as per customary and established business and industry practices. It is used when a return request, return authorization or deposition, or consumer return notification is made.